067
FNCA52 TJSJ 170853
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
453 AM AST TUE SEP 17 2019
DISCUSSION
ALTHOUGH A DRIER AIR MASS WITH SAHARAN DUST PARTICLES WILL ARRIVE
TODAY, THE LINGERING MOISTURE OF AN EXITING TROPICAL WAVE WILL
RESULT IN PASSING SHOWERS THROUGH THE MORNING. THE AVAILABLE
MOISTURE COMBINED WITH LOCAL EFFECTS AND DIURNAL HEATING WILL
RESULT IN SHOWERS AND THUNDERSTORMS ACROSS THE NORTHWEST QUADRANT
OF PUERTO RICO DURING THE AFTERNOON. MINIMUM RELATIVE HUMIDITY
VALUES WILL RANGE FROM THE MID 50S TO MIDDLE 60S, AND WINDS WILL
BE OUT OF THE EAST TO EAST-SOUTHEAST AT 10 TO 15 MPH. THEREFORE,
THE RISK OF FIRE DANGER IS LOW TODAY.
PRZ014-180900-
SOUTHEAST COASTAL PLAINS-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 20 0 20
TEMP (24H TREND) 91 (+1) 76 (0) 90
RH % (24H TREND) 59 (0) 87 (-2) 56
20FTWND-VAL/AM(MPH) E 13 E 13
20FTWND-RDG/PM(MPH) SE 13 E 8 SE 12
MIXING HGT(FT-AGL/MSL)4269 4505
TRANSPORT WND (MPH) SE 21 SE 16
VENT RATE (KT-FT) 78261 67575
DISPERSION 5 5
DSI 6 5 6
LAL 2 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ015-180900-
SOUTHERN HILLS-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 89 (+1) 73 (0) 89
RH % (24H TREND) 57 (-1) 89 (-5) 53
20FTWND-VAL/AM(MPH) E 13 E 12
20FTWND-RDG/PM(MPH) SE 13 E 7 SE 12
MIXING HGT(FT-AGL/MSL)4939 5040
TRANSPORT WND (MPH) SE 22 SE 17
VENT RATE (KT-FT) 97940 82858
DISPERSION 5 5
DSI 6 4 6
LAL 2 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ016-180900-
NORTH COASTAL PLAINS-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 93 (+3) 76 (-2) 92
RH % (24H TREND) 54 (-6) 87 (+1) 51
20FTWND-VAL/AM(MPH) E 11 SE 10
20FTWND-RDG/PM(MPH) E 11 SE 7 SE 11
MIXING HGT(FT-AGL/MSL)5134 5756
TRANSPORT WND (MPH) SE 16 SE 14
VENT RATE (KT-FT) 85187 82260
DISPERSION 5 5
DSI 6 4 6
LAL 2 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ017-180900-
NORTHERN HILLS-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 40 0 20
TEMP (24H TREND) 91 (+1) 73 (0) 92
RH % (24H TREND) 55 (-2) 90 (-4) 49
20FTWND-VAL/AM(MPH) E 10 SE 9
20FTWND-RDG/PM(MPH) SE 10 SE 6 SE 10
MIXING HGT(FT-AGL/MSL)5178 5726
TRANSPORT WND (MPH) SE 17 SE 14
VENT RATE (KT-FT) 82977 81045
DISPERSION 5 5
DSI 6 3 6
LAL 2 1 1
HAINES INDEX 3 4 3
REMARKS...NONE.
PRZ018-180900-
WEST COAST-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 50 0 20
TEMP (24H TREND) 90 (-1) 77 (0) 89
RH % (24H TREND) 60 (+3) 85 (-4) 57
20FTWND-VAL/AM(MPH) E 10 G20 E 11
20FTWND-RDG/PM(MPH) SE 12 G19 E 9 SE 12
MIXING HGT(FT-AGL/MSL)4625 4889
TRANSPORT WND (MPH) SE 20 SE 17
VENT RATE (KT-FT) 94164 82836
DISPERSION 5 5
DSI 6 4 6
LAL 2 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ019-180900-
EASTERN INTERIOR-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 90 (+1) 73 (-2) 91
RH % (24H TREND) 55 (-6) 92 (-1) 51
20FTWND-VAL/AM(MPH) E 12 SE 11
20FTWND-RDG/PM(MPH) SE 12 SE 6 SE 11
MIXING HGT(FT-AGL/MSL)5028 5229
TRANSPORT WND (MPH) SE 22 SE 16
VENT RATE (KT-FT) 89946 73206
DISPERSION 5 5
DSI 6 3 6
LAL 2 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ022-180900-
LUQUILLO MOUNTAIN RANGE-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 88 (+3) 71 (-2) 88
RH % (24H TREND) 61 (-2) 92 (-1) 55
20FTWND-VAL/AM(MPH) SE 13 SE 11
20FTWND-RDG/PM(MPH) SE 12 SE 8 SE 11
MIXING HGT(FT-AGL/MSL)4357 4415
TRANSPORT WND (MPH) SE 20 SE 17
VENT RATE (KT-FT) 78354 70640
DISPERSION 5 5
DSI 6 5 6
LAL 1 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ023-180900-
CENTRAL MOUNTAIN RANGE-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 40 0 20
TEMP (24H TREND) 89 (+2) 70 (0) 90
RH % (24H TREND) 56 (+1) 91 (-4) 48
20FTWND-VAL/AM(MPH) E 11 SE 11
20FTWND-RDG/PM(MPH) SE 12 SE 7 SE 11
MIXING HGT(FT-AGL/MSL)5317 5506
TRANSPORT WND (MPH) SE 21 SE 16
VENT RATE (KT-FT) 98860 81328
DISPERSION 5 5
DSI 5 2 6
LAL 2 1 1
HAINES INDEX 3 4 3
REMARKS...NONE.
PRZ024-180900-
CAYEY MOUNTAIN RANGE-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 87 (+1) 72 (-1) 89
RH % (24H TREND) 59 (-4) 91 (-1) 55
20FTWND-VAL/AM(MPH) E 12 SE 11
20FTWND-RDG/PM(MPH) SE 12 SE 6 SE 11
MIXING HGT(FT-AGL/MSL)4301 4692
TRANSPORT WND (MPH) SE 20 SE 17
VENT RATE (KT-FT) 73117 70380
DISPERSION 5 5
DSI 6 4 6
LAL 1 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
PRZ025-180900-
VIEQUES-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 30
TEMP (24H TREND) 90 (+1) 80 (-1) 90
RH % (24H TREND) 59 (-4) 82 (-3) 59
20FTWND-VAL/AM(MPH) E 17 SE 13
20FTWND-RDG/PM(MPH) E 13 E 12 SE 13
MIXING HGT(FT-AGL/MSL)3544 3519
TRANSPORT WND (MPH) SE 21 SE 17
VENT RATE (KT-FT) 62550 52575
DISPERSION 5 5
DSI 6 6 6
LAL 1 1 1
HAINES INDEX 4 3 3
REMARKS...NONE.
PRZ026-180900-
CULEBRA-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 30
TEMP (24H TREND) 90 (+1) 81 (-1) 90
RH % (24H TREND) 61 (-4) 83 (-2) 59
20FTWND-VAL/AM(MPH) E 18 SE 14
20FTWND-RDG/PM(MPH) SE 14 E 13 SE 13
MIXING HGT(FT-AGL/MSL)3364 3464
TRANSPORT WND (MPH) SE 23 E 21
VENT RATE (KT-FT) 67280 62352
DISPERSION 5 5
DSI 6 6 6
LAL 1 1 1
HAINES INDEX 4 3 3
REMARKS...NONE.
PRZ027-180900-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 90 (0) 77 (0) 88
RH % (24H TREND) 60 (+2) 85 (-5) 58
20FTWND-VAL/AM(MPH) E 14 G21 E 14
20FTWND-RDG/PM(MPH) SE 14 E 10 SE 13
MIXING HGT(FT-AGL/MSL)4514 4698
TRANSPORT WND (MPH) SE 24 SE 21
VENT RATE (KT-FT) 92224 83429
DISPERSION 5 5
DSI 6 5 6
LAL 2 1 1
HAINES INDEX 3 3 3
REMARKS...NONE.
VIZ001-180900-
SAINT THOMAS AND SAINT JOHN-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 30
TEMP (24H TREND) 89 (0) 78 (-2) 90
RH % (24H TREND) 59 (-3) 83 (-3) 57
20FTWND-VAL/AM(MPH) E 18 SE 13
20FTWND-RDG/PM(MPH) SE 14 E 12 SE 12
MIXING HGT(FT-AGL/MSL)3389 3382
TRANSPORT WND (MPH) SE 24 E 20
VENT RATE (KT-FT) 73370 60876
DISPERSION 5 5
DSI 6 6 6
LAL 1 1 1
HAINES INDEX 4 4 3
REMARKS...NONE.
VIZ002-180900-
ST CROIX-
453 AM AST TUE SEP 17 2019
TODAY TONIGHT WED
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 30
TEMP (24H TREND) 89 (+1) 76 (-3) 90
RH % (24H TREND) 62 (-5) 93 (+4) 58
20FTWND-VAL/AM(MPH) E 18 E 13
20FTWND-RDG/PM(MPH) E 14 E 13 SE 12
MIXING HGT(FT-AGL/MSL)4273 4162
TRANSPORT WND (MPH) SE 24 SE 20
VENT RATE (KT-FT) 89733 70754
DISPERSION 5 5
DSI 6 6 6
LAL 1 1 1
HAINES INDEX 4 4 3
REMARKS...NONE.
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